/*! jQuery UI - v1.12.1 - 2017-11-15
* http://jqueryui.com
* Includes: widget.js, data.js, disable-selection.js, scroll-parent.js, widgets/draggable.js, widgets/mouse.js
* Copyright jQuery Foundation and other contributors; Licensed MIT */

(function (factory) {
    if (typeof define === "function" && define.amd) {

        // AMD. Register as an anonymous module.
        define(["jquery"], factory);
    } else {

        // Browser globals
        factory(jQuery);
    }
}(function ($) {

    $.ui = $.ui || {};

    var version = $.ui.version = "1.12.1";


    /*!
 * jQuery UI Widget 1.12.1
 * http://jqueryui.com
 *
 * Copyright jQuery Foundation and other contributors
 * Released under the MIT license.
 * http://jquery.org/license
 */

//>>label: Widget
//>>group: Core
//>>description: Provides a factory for creating stateful widgets with a common API.
//>>docs: http://api.jqueryui.com/jQuery.widget/
//>>demos: http://jqueryui.com/widget/


    var widgetUuid = 0;
    var widgetSlice = Array.prototype.slice;

    $.cleanData = (function (orig) {
        return function (elems) {
            var events, elem, i;
            for (i = 0; (elem = elems[i]) != null; i++) {
                try {

                    // Only trigger remove when necessary to save time
                    events = $._data(elem, "events");
                    if (events && events.remove) {
                        $(elem).triggerHandler("remove");
                    }

                    // Http://bugs.jquery.com/ticket/8235
                } catch (e) {
                }
            }
            orig(elems);
        };
    })($.cleanData);

    $.widget = function (name, base, prototype) {
        var existingConstructor, constructor, basePrototype;

        // ProxiedPrototype allows the provided prototype to remain unmodified
        // so that it can be used as a mixin for multiple widgets (#8876)
        var proxiedPrototype = {};

        var namespace = name.split(".")[0];
        name = name.split(".")[1];
        var fullName = namespace + "-" + name;

        if (!prototype) {
            prototype = base;
            base = $.Widget;
        }

        if ($.isArray(prototype)) {
            prototype = $.extend.apply(null, [{}].concat(prototype));
        }

        // Create selector for plugin
        $.expr[":"][fullName.toLowerCase()] = function (elem) {
            return !!$.data(elem, fullName);
        };

        $[namespace] = $[namespace] || {};
        existingConstructor = $[namespace][name];
        constructor = $[namespace][name] = function (options, element) {

            // Allow instantiation without "new" keyword
            if (!this._createWidget) {
                return new constructor(options, element);
            }

            // Allow instantiation without initializing for simple inheritance
            // must use "new" keyword (the code above always passes args)
            if (arguments.length) {
                this._createWidget(options, element);
            }
        };

        // Extend with the existing constructor to carry over any static properties
        $.extend(constructor, existingConstructor, {
            version: prototype.version,

            // Copy the object used to create the prototype in case we need to
            // redefine the widget later
            _proto: $.extend({}, prototype),

            // Track widgets that inherit from this widget in case this widget is
            // redefined after a widget inherits from it
            _childConstructors: []
        });

        basePrototype = new base();

        // We need to make the options hash a property directly on the new instance
        // otherwise we'll modify the options hash on the prototype that we're
        // inheriting from
        basePrototype.options = $.widget.extend({}, basePrototype.options);
        $.each(prototype, function (prop, value) {
            if (!$.isFunction(value)) {
                proxiedPrototype[prop] = value;
                return;
            }
            proxiedPrototype[prop] = (function () {
                function _super() {
                    return base.prototype[prop].apply(this, arguments);
                }

                function _superApply(args) {
                    return base.prototype[prop].apply(this, args);
                }

                return function () {
                    var __super = this._super;
                    var __superApply = this._superApply;
                    var returnValue;

                    this._super = _super;
                    this._superApply = _superApply;

                    returnValue = value.apply(this, arguments);

                    this._super = __super;
                    this._superApply = __superApply;

                    return returnValue;
                };
            })();
        });
        constructor.prototype = $.widget.extend(basePrototype, {

            // TODO: remove support for widgetEventPrefix
            // always use the name + a colon as the prefix, e.g., draggable:start
            // don't prefix for widgets that aren't DOM-based
            widgetEventPrefix: existingConstructor ? (basePrototype.widgetEventPrefix || name) : name
        }, proxiedPrototype, {
            constructor: constructor,
            namespace: namespace,
            widgetName: name,
            widgetFullName: fullName
        });

        // If this widget is being redefined then we need to find all widgets that
        // are inheriting from it and redefine all of them so that they inherit from
        // the new version of this widget. We're essentially trying to replace one
        // level in the prototype chain.
        if (existingConstructor) {
            $.each(existingConstructor._childConstructors, function (i, child) {
                var childPrototype = child.prototype;

                // Redefine the child widget using the same prototype that was
                // originally used, but inherit from the new version of the base
                $.widget(childPrototype.namespace + "." + childPrototype.widgetName, constructor,
                    child._proto);
            });

            // Remove the list of existing child constructors from the old constructor
            // so the old child constructors can be garbage collected
            delete existingConstructor._childConstructors;
        } else {
            base._childConstructors.push(constructor);
        }

        $.widget.bridge(name, constructor);

        return constructor;
    };

    $.widget.extend = function (target) {
        var input = widgetSlice.call(arguments, 1);
        var inputIndex = 0;
        var inputLength = input.length;
        var key;
        var value;

        for (; inputIndex < inputLength; inputIndex++) {
            for (key in input[inputIndex]) {
                value = input[inputIndex][key];
                if (input[inputIndex].hasOwnProperty(key) && value !== undefined) {

                    // Clone objects
                    if ($.isPlainObject(value)) {
                        target[key] = $.isPlainObject(target[key]) ?
                            $.widget.extend({}, target[key], value) :

                            // Don't extend strings, arrays, etc. with objects
                            $.widget.extend({}, value);

                        // Copy everything else by reference
                    } else {
                        target[key] = value;
                    }
                }
            }
        }
        return target;
    };

    $.widget.bridge = function (name, object) {
        var fullName = object.prototype.widgetFullName || name;
        $.fn[name] = function (options) {
            var isMethodCall = typeof options === "string";
            var args = widgetSlice.call(arguments, 1);
            var returnValue = this;

            if (isMethodCall) {

                // If this is an empty collection, we need to have the instance method
                // return undefined instead of the jQuery instance
                if (!this.length && options === "instance") {
                    returnValue = undefined;
                } else {
                    this.each(function () {
                        var methodValue;
                        var instance = $.data(this, fullName);

                        if (options === "instance") {
                            returnValue = instance;
                            return false;
                        }

                        if (!instance) {
                            return $.error("cannot call methods on " + name +
                                " prior to initialization; " +
                                "attempted to call method '" + options + "'");
                        }

                        if (!$.isFunction(instance[options]) || options.charAt(0) === "_") {
                            return $.error("no such method '" + options + "' for " + name +
                                " widget instance");
                        }

                        methodValue = instance[options].apply(instance, args);

                        if (methodValue !== instance && methodValue !== undefined) {
                            returnValue = methodValue && methodValue.jquery ?
                                returnValue.pushStack(methodValue.get()) :
                                methodValue;
                            return false;
                        }
                    });
                }
            } else {

                // Allow multiple hashes to be passed on init
                if (args.length) {
                    options = $.widget.extend.apply(null, [options].concat(args));
                }

                this.each(function () {
                    var instance = $.data(this, fullName);
                    if (instance) {
                        instance.option(options || {});
                        if (instance._init) {
                            instance._init();
                        }
                    } else {
                        $.data(this, fullName, new object(options, this));
                    }
                });
            }

            return returnValue;
        };
    };

    $.Widget = function ( /* options, element */) {
    };
    $.Widget._childConstructors = [];

    $.Widget.prototype = {
        widgetName: "widget",
        widgetEventPrefix: "",
        defaultElement: "<div>",

        options: {
            classes: {},
            disabled: false,

            // Callbacks
            create: null
        },

        _createWidget: function (options, element) {
            element = $(element || this.defaultElement || this)[0];
            this.element = $(element);
            this.uuid = widgetUuid++;
            this.eventNamespace = "." + this.widgetName + this.uuid;

            this.bindings = $();
            this.hoverable = $();
            this.focusable = $();
            this.classesElementLookup = {};

            if (element !== this) {
                $.data(element, this.widgetFullName, this);
                this._on(true, this.element, {
                    remove: function (event) {
                        if (event.target === element) {
                            this.destroy();
                        }
                    }
                });
                this.document = $(element.style ?

                    // Element within the document
                    element.ownerDocument :

                    // Element is window or document
                    element.document || element);
                this.window = $(this.document[0].defaultView || this.document[0].parentWindow);
            }

            this.options = $.widget.extend({},
                this.options,
                this._getCreateOptions(),
                options);

            this._create();

            if (this.options.disabled) {
                this._setOptionDisabled(this.options.disabled);
            }

            this._trigger("create", null, this._getCreateEventData());
            this._init();
        },

        _getCreateOptions: function () {
            return {};
        },

        _getCreateEventData: $.noop,

        _create: $.noop,

        _init: $.noop,

        destroy: function () {
            var that = this;

            this._destroy();
            $.each(this.classesElementLookup, function (key, value) {
                that._removeClass(value, key);
            });

            // We can probably remove the unbind calls in 2.0
            // all event bindings should go through this._on()
            this.element
                .off(this.eventNamespace)
                .removeData(this.widgetFullName);
            this.widget()
                .off(this.eventNamespace)
                .removeAttr("aria-disabled");

            // Clean up events and states
            this.bindings.off(this.eventNamespace);
        },

        _destroy: $.noop,

        widget: function () {
            return this.element;
        },

        option: function (key, value) {
            var options = key;
            var parts;
            var curOption;
            var i;

            if (arguments.length === 0) {

                // Don't return a reference to the internal hash
                return $.widget.extend({}, this.options);
            }

            if (typeof key === "string") {

                // Handle nested keys, e.g., "foo.bar" => { foo: { bar: ___ } }
                options = {};
                parts = key.split(".");
                key = parts.shift();
                if (parts.length) {
                    curOption = options[key] = $.widget.extend({}, this.options[key]);
                    for (i = 0; i < parts.length - 1; i++) {
                        curOption[parts[i]] = curOption[parts[i]] || {};
                        curOption = curOption[parts[i]];
                    }
                    key = parts.pop();
                    if (arguments.length === 1) {
                        return curOption[key] === undefined ? null : curOption[key];
                    }
                    curOption[key] = value;
                } else {
                    if (arguments.length === 1) {
                        return this.options[key] === undefined ? null : this.options[key];
                    }
                    options[key] = value;
                }
            }

            this._setOptions(options);

            return this;
        },

        _setOptions: function (options) {
            var key;

            for (key in options) {
                this._setOption(key, options[key]);
            }

            return this;
        },

        _setOption: function (key, value) {
            if (key === "classes") {
                this._setOptionClasses(value);
            }

            this.options[key] = value;

            if (key === "disabled") {
                this._setOptionDisabled(value);
            }

            return this;
        },

        _setOptionClasses: function (value) {
            var classKey, elements, currentElements;

            for (classKey in value) {
                currentElements = this.classesElementLookup[classKey];
                if (value[classKey] === this.options.classes[classKey] ||
                    !currentElements ||
                    !currentElements.length) {
                    continue;
                }

                // We are doing this to create a new jQuery object because the _removeClass() call
                // on the next line is going to destroy the reference to the current elements being
                // tracked. We need to save a copy of this collection so that we can add the new classes
                // below.
                elements = $(currentElements.get());
                this._removeClass(currentElements, classKey);

                // We don't use _addClass() here, because that uses this.options.classes
                // for generating the string of classes. We want to use the value passed in from
                // _setOption(), this is the new value of the classes option which was passed to
                // _setOption(). We pass this value directly to _classes().
                elements.addClass(this._classes({
                    element: elements,
                    keys: classKey,
                    classes: value,
                    add: true
                }));
            }
        },

        _setOptionDisabled: function (value) {
            this._toggleClass(this.widget(), this.widgetFullName + "-disabled", null, !!value);

            // If the widget is becoming disabled, then nothing is interactive
            if (value) {
                this._removeClass(this.hoverable, null, "ui-state-hover");
                this._removeClass(this.focusable, null, "ui-state-focus");
            }
        },

        enable: function () {
            return this._setOptions({disabled: false});
        },

        disable: function () {
            return this._setOptions({disabled: true});
        },

        _classes: function (options) {
            var full = [];
            var that = this;

            options = $.extend({
                element: this.element,
                classes: this.options.classes || {}
            }, options);

            function processClassString(classes, checkOption) {
                var current, i;
                for (i = 0; i < classes.length; i++) {
                    current = that.classesElementLookup[classes[i]] || $();
                    if (options.add) {
                        current = $($.unique(current.get().concat(options.element.get())));
                    } else {
                        current = $(current.not(options.element).get());
                    }
                    that.classesElementLookup[classes[i]] = current;
                    full.push(classes[i]);
                    if (checkOption && options.classes[classes[i]]) {
                        full.push(options.classes[classes[i]]);
                    }
                }
            }

            this._on(options.element, {
                "remove": "_untrackClassesElement"
            });

            if (options.keys) {
                processClassString(options.keys.match(/\S+/g) || [], true);
            }
            if (options.extra) {
                processClassString(options.extra.match(/\S+/g) || []);
            }

            return full.join(" ");
        },

        _untrackClassesElement: function (event) {
            var that = this;
            $.each(that.classesElementLookup, function (key, value) {
                if ($.inArray(event.target, value) !== -1) {
                    that.classesElementLookup[key] = $(value.not(event.target).get());
                }
            });
        },

        _removeClass: function (element, keys, extra) {
            return this._toggleClass(element, keys, extra, false);
        },

        _addClass: function (element, keys, extra) {
            return this._toggleClass(element, keys, extra, true);
        },

        _toggleClass: function (element, keys, extra, add) {
            add = (typeof add === "boolean") ? add : extra;
            var shift = (typeof element === "string" || element === null),
                options = {
                    extra: shift ? keys : extra,
                    keys: shift ? element : keys,
                    element: shift ? this.element : element,
                    add: add
                };
            options.element.toggleClass(this._classes(options), add);
            return this;
        },

        _on: function (suppressDisabledCheck, element, handlers) {
            var delegateElement;
            var instance = this;

            // No suppressDisabledCheck flag, shuffle arguments
            if (typeof suppressDisabledCheck !== "boolean") {
                handlers = element;
                element = suppressDisabledCheck;
                suppressDisabledCheck = false;
            }

            // No element argument, shuffle and use this.element
            if (!handlers) {
                handlers = element;
                element = this.element;
                delegateElement = this.widget();
            } else {
                element = delegateElement = $(element);
                this.bindings = this.bindings.add(element);
            }

            $.each(handlers, function (event, handler) {
                function handlerProxy() {

                    // Allow widgets to customize the disabled handling
                    // - disabled as an array instead of boolean
                    // - disabled class as method for disabling individual parts
                    if (!suppressDisabledCheck &&
                        (instance.options.disabled === true ||
                            $(this).hasClass("ui-state-disabled"))) {
                        return;
                    }
                    return (typeof handler === "string" ? instance[handler] : handler)
                        .apply(instance, arguments);
                }

                // Copy the guid so direct unbinding works
                if (typeof handler !== "string") {
                    handlerProxy.guid = handler.guid =
                        handler.guid || handlerProxy.guid || $.guid++;
                }

                var match = event.match(/^([\w:-]*)\s*(.*)$/);
                var eventName = match[1] + instance.eventNamespace;
                var selector = match[2];

                if (selector) {
                    delegateElement.on(eventName, selector, handlerProxy);
                } else {
                    element.on(eventName, handlerProxy);
                }
            });
        },

        _off: function (element, eventName) {
            eventName = (eventName || "").split(" ").join(this.eventNamespace + " ") +
                this.eventNamespace;
            element.off(eventName).off(eventName);

            // Clear the stack to avoid memory leaks (#10056)
            this.bindings = $(this.bindings.not(element).get());
            this.focusable = $(this.focusable.not(element).get());
            this.hoverable = $(this.hoverable.not(element).get());
        },

        _delay: function (handler, delay) {
            function handlerProxy() {
                return (typeof handler === "string" ? instance[handler] : handler)
                    .apply(instance, arguments);
            }

            var instance = this;
            return setTimeout(handlerProxy, delay || 0);
        },

        _hoverable: function (element) {
            this.hoverable = this.hoverable.add(element);
            this._on(element, {
                mouseenter: function (event) {
                    this._addClass($(event.currentTarget), null, "ui-state-hover");
                },
                mouseleave: function (event) {
                    this._removeClass($(event.currentTarget), null, "ui-state-hover");
                }
            });
        },

        _focusable: function (element) {
            this.focusable = this.focusable.add(element);
            this._on(element, {
                focusin: function (event) {
                    this._addClass($(event.currentTarget), null, "ui-state-focus");
                },
                focusout: function (event) {
                    this._removeClass($(event.currentTarget), null, "ui-state-focus");
                }
            });
        },

        _trigger: function (type, event, data) {
            var prop, orig;
            var callback = this.options[type];

            data = data || {};
            event = $.Event(event);
            event.type = (type === this.widgetEventPrefix ?
                type :
                this.widgetEventPrefix + type).toLowerCase();

            // The original event may come from any element
            // so we need to reset the target on the new event
            event.target = this.element[0];

            // Copy original event properties over to the new event
            orig = event.originalEvent;
            if (orig) {
                for (prop in orig) {
                    if (!(prop in event)) {
                        event[prop] = orig[prop];
                    }
                }
            }

            this.element.trigger(event, data);
            return !($.isFunction(callback) &&
                callback.apply(this.element[0], [event].concat(data)) === false ||
                event.isDefaultPrevented());
        }
    };

    $.each({show: "fadeIn", hide: "fadeOut"}, function (method, defaultEffect) {
        $.Widget.prototype["_" + method] = function (element, options, callback) {
            if (typeof options === "string") {
                options = {effect: options};
            }

            var hasOptions;
            var effectName = !options ?
                method :
                options === true || typeof options === "number" ?
                    defaultEffect :
                    options.effect || defaultEffect;

            options = options || {};
            if (typeof options === "number") {
                options = {duration: options};
            }

            hasOptions = !$.isEmptyObject(options);
            options.complete = callback;

            if (options.delay) {
                element.delay(options.delay);
            }

            if (hasOptions && $.effects && $.effects.effect[effectName]) {
                element[method](options);
            } else if (effectName !== method && element[effectName]) {
                element[effectName](options.duration, options.easing, callback);
            } else {
                element.queue(function (next) {
                    $(this)[method]();
                    if (callback) {
                        callback.call(element[0]);
                    }
                    next();
                });
            }
        };
    });

    var widget = $.widget;


    /*!
 * jQuery UI :data 1.12.1
 * http://jqueryui.com
 *
 * Copyright jQuery Foundation and other contributors
 * Released under the MIT license.
 * http://jquery.org/license
 */

//>>label: :data Selector
//>>group: Core
//>>description: Selects elements which have data stored under the specified key.
//>>docs: http://api.jqueryui.com/data-selector/


    var data = $.extend($.expr[":"], {
        data: $.expr.createPseudo ?
            $.expr.createPseudo(function (dataName) {
                return function (elem) {
                    return !!$.data(elem, dataName);
                };
            }) :

            // Support: jQuery <1.8
            function (elem, i, match) {
                return !!$.data(elem, match[3]);
            }
    });

    /*!
 * jQuery UI Disable Selection 1.12.1
 * http://jqueryui.com
 *
 * Copyright jQuery Foundation and other contributors
 * Released under the MIT license.
 * http://jquery.org/license
 */

//>>label: disableSelection
//>>group: Core
//>>description: Disable selection of text content within the set of matched elements.
//>>docs: http://api.jqueryui.com/disableSelection/

// This file is deprecated


    var disableSelection = $.fn.extend({
        disableSelection: (function () {
            var eventType = "onselectstart" in document.createElement("div") ?
                "selectstart" :
                "mousedown";

            return function () {
                return this.on(eventType + ".ui-disableSelection", function (event) {
                    event.preventDefault();
                });
            };
        })(),

        enableSelection: function () {
            return this.off(".ui-disableSelection");
        }
    });


    /*!
 * jQuery UI Scroll Parent 1.12.1
 * http://jqueryui.com
 *
 * Copyright jQuery Foundation and other contributors
 * Released under the MIT license.
 * http://jquery.org/license
 */

//>>label: scrollParent
//>>group: Core
//>>description: Get the closest ancestor element that is scrollable.
//>>docs: http://api.jqueryui.com/scrollParent/


    var scrollParent = $.fn.scrollParent = function (includeHidden) {
        var position = this.css("position"),
            excludeStaticParent = position === "absolute",
            overflowRegex = includeHidden ? /(auto|scroll|hidden)/ : /(auto|scroll)/,
            scrollParent = this.parents().filter(function () {
                var parent = $(this);
                if (excludeStaticParent && parent.css("position") === "static") {
                    return false;
                }
                return overflowRegex.test(parent.css("overflow") + parent.css("overflow-y") +
                    parent.css("overflow-x"));
            }).eq(0);

        return position === "fixed" || !scrollParent.length ?
            $(this[0].ownerDocument || document) :
            scrollParent;
    };


// This file is deprecated
    var ie = $.ui.ie = !!/msie [\w.]+/.exec(navigator.userAgent.toLowerCase());

    /*!
 * jQuery UI Mouse 1.12.1
 * http://jqueryui.com
 *
 * Copyright jQuery Foundation and other contributors
 * Released under the MIT license.
 * http://jquery.org/license
 */

//>>label: Mouse
//>>group: Widgets
//>>description: Abstracts mouse-based interactions to assist in creating certain widgets.
//>>docs: http://api.jqueryui.com/mouse/


    var mouseHandled = false;
    $(document).on("mouseup", function () {
        mouseHandled = false;
    });

    var widgetsMouse = $.widget("ui.mouse", {
        version: "1.12.1",
        options: {
            cancel: "input, textarea, button, select, option",
            distance: 1,
            delay: 0
        },
        _mouseInit: function () {
            var that = this;

            this.element
                .on("mousedown." + this.widgetName, function (event) {
                    return that._mouseDown(event);
                })
                .on("click." + this.widgetName, function (event) {
                    if (true === $.data(event.target, that.widgetName + ".preventClickEvent")) {
                        $.removeData(event.target, that.widgetName + ".preventClickEvent");
                        event.stopImmediatePropagation();
                        return false;
                    }
                });

            this.started = false;
        },

        // TODO: make sure destroying one instance of mouse doesn't mess with
        // other instances of mouse
        _mouseDestroy: function () {
            this.element.off("." + this.widgetName);
            if (this._mouseMoveDelegate) {
                this.document
                    .off("mousemove." + this.widgetName, this._mouseMoveDelegate)
                    .off("mouseup." + this.widgetName, this._mouseUpDelegate);
            }
        },

        _mouseDown: function (event) {

            // don't let more than one widget handle mouseStart
            if (mouseHandled) {
                return;
            }

            this._mouseMoved = false;

            // We may have missed mouseup (out of window)
            (this._mouseStarted && this._mouseUp(event));

            this._mouseDownEvent = event;

            var that = this,
                btnIsLeft = (event.which === 1),

                // event.target.nodeName works around a bug in IE 8 with
                // disabled inputs (#7620)
                elIsCancel = (typeof this.options.cancel === "string" && event.target.nodeName ?
                    $(event.target).closest(this.options.cancel).length : false);
            if (!btnIsLeft || elIsCancel || !this._mouseCapture(event)) {
                return true;
            }

            this.mouseDelayMet = !this.options.delay;
            if (!this.mouseDelayMet) {
                this._mouseDelayTimer = setTimeout(function () {
                    that.mouseDelayMet = true;
                }, this.options.delay);
            }

            if (this._mouseDistanceMet(event) && this._mouseDelayMet(event)) {
                this._mouseStarted = (this._mouseStart(event) !== false);
                if (!this._mouseStarted) {
                    event.preventDefault();
                    return true;
                }
            }

            // Click event may never have fired (Gecko & Opera)
            if (true === $.data(event.target, this.widgetName + ".preventClickEvent")) {
                $.removeData(event.target, this.widgetName + ".preventClickEvent");
            }

            // These delegates are required to keep context
            this._mouseMoveDelegate = function (event) {
                return that._mouseMove(event);
            };
            this._mouseUpDelegate = function (event) {
                return that._mouseUp(event);
            };

            this.document
                .on("mousemove." + this.widgetName, this._mouseMoveDelegate)
                .on("mouseup." + this.widgetName, this._mouseUpDelegate);

            event.preventDefault();

            mouseHandled = true;
            return true;
        },

        _mouseMove: function (event) {

            // Only check for mouseups outside the document if you've moved inside the document
            // at least once. This prevents the firing of mouseup in the case of IE<9, which will
            // fire a mousemove event if content is placed under the cursor. See #7778
            // Support: IE <9
            if (this._mouseMoved) {

                // IE mouseup check - mouseup happened when mouse was out of window
                if ($.ui.ie && (!document.documentMode || document.documentMode < 9) &&
                    !event.button) {
                    return this._mouseUp(event);

                    // Iframe mouseup check - mouseup occurred in another document
                } else if (!event.which) {

                    // Support: Safari <=8 - 9
                    // Safari sets which to 0 if you press any of the following keys
                    // during a drag (#14461)
                    if (event.originalEvent.altKey || event.originalEvent.ctrlKey ||
                        event.originalEvent.metaKey || event.originalEvent.shiftKey) {
                        this.ignoreMissingWhich = true;
                    } else if (!this.ignoreMissingWhich) {
                        return this._mouseUp(event);
                    }
                }
            }

            if (event.which || event.button) {
                this._mouseMoved = true;
            }

            if (this._mouseStarted) {
                this._mouseDrag(event);
                return event.preventDefault();
            }

            if (this._mouseDistanceMet(event) && this._mouseDelayMet(event)) {
                this._mouseStarted =
                    (this._mouseStart(this._mouseDownEvent, event) !== false);
                (this._mouseStarted ? this._mouseDrag(event) : this._mouseUp(event));
            }

            return !this._mouseStarted;
        },

        _mouseUp: function (event) {
            this.document
                .off("mousemove." + this.widgetName, this._mouseMoveDelegate)
                .off("mouseup." + this.widgetName, this._mouseUpDelegate);

            if (this._mouseStarted) {
                this._mouseStarted = false;

                if (event.target === this._mouseDownEvent.target) {
                    $.data(event.target, this.widgetName + ".preventClickEvent", true);
                }

                this._mouseStop(event);
            }

            if (this._mouseDelayTimer) {
                clearTimeout(this._mouseDelayTimer);
                delete this._mouseDelayTimer;
            }

            this.ignoreMissingWhich = false;
            mouseHandled = false;
            event.preventDefault();
        },

        _mouseDistanceMet: function (event) {
            return (Math.max(
                    Math.abs(this._mouseDownEvent.pageX - event.pageX),
                    Math.abs(this._mouseDownEvent.pageY - event.pageY)
                ) >= this.options.distance
            );
        },

        _mouseDelayMet: function ( /* event */) {
            return this.mouseDelayMet;
        },

        // These are placeholder methods, to be overriden by extending plugin
        _mouseStart: function ( /* event */) {
        },
        _mouseDrag: function ( /* event */) {
        },
        _mouseStop: function ( /* event */) {
        },
        _mouseCapture: function ( /* event */) {
            return true;
        }
    });


// $.ui.plugin is deprecated. Use $.widget() extensions instead.
    var plugin = $.ui.plugin = {
        add: function (module, option, set) {
            var i,
                proto = $.ui[module].prototype;
            for (i in set) {
                proto.plugins[i] = proto.plugins[i] || [];
                proto.plugins[i].push([option, set[i]]);
            }
        },
        call: function (instance, name, args, allowDisconnected) {
            var i,
                set = instance.plugins[name];

            if (!set) {
                return;
            }

            if (!allowDisconnected && (!instance.element[0].parentNode ||
                instance.element[0].parentNode.nodeType === 11)) {
                return;
            }

            for (i = 0; i < set.length; i++) {
                if (instance.options[set[i][0]]) {
                    set[i][1].apply(instance.element, args);
                }
            }
        }
    };


    var safeActiveElement = $.ui.safeActiveElement = function (document) {
        var activeElement;

        // Support: IE 9 only
        // IE9 throws an "Unspecified error" accessing document.activeElement from an <iframe>
        try {
            activeElement = document.activeElement;
        } catch (error) {
            activeElement = document.body;
        }

        // Support: IE 9 - 11 only
        // IE may return null instead of an element
        // Interestingly, this only seems to occur when NOT in an iframe
        if (!activeElement) {
            activeElement = document.body;
        }

        // Support: IE 11 only
        // IE11 returns a seemingly empty object in some cases when accessing
        // document.activeElement from an <iframe>
        if (!activeElement.nodeName) {
            activeElement = document.body;
        }

        return activeElement;
    };


    var safeBlur = $.ui.safeBlur = function (element) {

        // Support: IE9 - 10 only
        // If the <body> is blurred, IE will switch windows, see #9420
        if (element && element.nodeName.toLowerCase() !== "body") {
            $(element).trigger("blur");
        }
    };


    /*!
 * jQuery UI Draggable 1.12.1
 * http://jqueryui.com
 *
 * Copyright jQuery Foundation and other contributors
 * Released under the MIT license.
 * http://jquery.org/license
 */

//>>label: Draggable
//>>group: Interactions
//>>description: Enables dragging functionality for any element.
//>>docs: http://api.jqueryui.com/draggable/
//>>demos: http://jqueryui.com/draggable/
//>>css.structure: ../../themes/base/draggable.css


    $.widget("ui.draggable", $.ui.mouse, {
        version: "1.12.1",
        widgetEventPrefix: "drag",
        options: {
            addClasses: true,
            appendTo: "parent",
            axis: false,
            connectToSortable: false,
            containment: false,
            cursor: "auto",
            cursorAt: false,
            grid: false,
            handle: false,
            helper: "original",
            iframeFix: false,
            opacity: false,
            refreshPositions: false,
            revert: false,
            revertDuration: 500,
            scope: "default",
            scroll: true,
            scrollSensitivity: 20,
            scrollSpeed: 20,
            snap: false,
            snapMode: "both",
            snapTolerance: 20,
            stack: false,
            zIndex: false,

            // Callbacks
            drag: null,
            start: null,
            stop: null
        },
        _create: function () {

            if (this.options.helper === "original") {
                this._setPositionRelative();
            }
            if (this.options.addClasses) {
                this._addClass("ui-draggable");
            }
            this._setHandleClassName();

            this._mouseInit();
        },

        _setOption: function (key, value) {
            this._super(key, value);
            if (key === "handle") {
                this._removeHandleClassName();
                this._setHandleClassName();
            }
        },

        _destroy: function () {
            if ((this.helper || this.element).is(".ui-draggable-dragging")) {
                this.destroyOnClear = true;
                return;
            }
            this._removeHandleClassName();
            this._mouseDestroy();
        },

        _mouseCapture: function (event) {
            var o = this.options;

            // Among others, prevent a drag on a resizable-handle
            if (this.helper || o.disabled ||
                $(event.target).closest(".ui-resizable-handle").length > 0) {
                return false;
            }

            //Quit if we're not on a valid handle
            this.handle = this._getHandle(event);
            if (!this.handle) {
                return false;
            }

            this._blurActiveElement(event);

            this._blockFrames(o.iframeFix === true ? "iframe" : o.iframeFix);

            return true;

        },

        _blockFrames: function (selector) {
            this.iframeBlocks = this.document.find(selector).map(function () {
                var iframe = $(this);

                return $("<div>")
                    .css("position", "absolute")
                    .appendTo(iframe.parent())
                    .outerWidth(iframe.outerWidth())
                    .outerHeight(iframe.outerHeight())
                    .offset(iframe.offset())[0];
            });
        },

        _unblockFrames: function () {
            if (this.iframeBlocks) {
                this.iframeBlocks.remove();
                delete this.iframeBlocks;
            }
        },

        _blurActiveElement: function (event) {
            var activeElement = $.ui.safeActiveElement(this.document[0]),
                target = $(event.target);

            // Don't blur if the event occurred on an element that is within
            // the currently focused element
            // See #10527, #12472
            if (target.closest(activeElement).length) {
                return;
            }

            // Blur any element that currently has focus, see #4261
            $.ui.safeBlur(activeElement);
        },

        _mouseStart: function (event) {

            var o = this.options;

            //Create and append the visible helper
            this.helper = this._createHelper(event);

            this._addClass(this.helper, "ui-draggable-dragging");

            //Cache the helper size
            this._cacheHelperProportions();

            //If ddmanager is used for droppables, set the global draggable
            if ($.ui.ddmanager) {
                $.ui.ddmanager.current = this;
            }

            /*
		 * - Position generation -
		 * This block generates everything position related - it's the core of draggables.
		 */

            //Cache the margins of the original element
            this._cacheMargins();

            //Store the helper's css position
            this.cssPosition = this.helper.css("position");
            this.scrollParent = this.helper.scrollParent(true);
            this.offsetParent = this.helper.offsetParent();
            this.hasFixedAncestor = this.helper.parents().filter(function () {
                return $(this).css("position") === "fixed";
            }).length > 0;

            //The element's absolute position on the page minus margins
            this.positionAbs = this.element.offset();
            this._refreshOffsets(event);

            //Generate the original position
            this.originalPosition = this.position = this._generatePosition(event, false);
            this.originalPageX = event.pageX;
            this.originalPageY = event.pageY;

            //Adjust the mouse offset relative to the helper if "cursorAt" is supplied
            (o.cursorAt && this._adjustOffsetFromHelper(o.cursorAt));

            //Set a containment if given in the options
            this._setContainment();

            //Trigger event + callbacks
            if (this._trigger("start", event) === false) {
                this._clear();
                return false;
            }

            //Recache the helper size
            this._cacheHelperProportions();

            //Prepare the droppable offsets
            if ($.ui.ddmanager && !o.dropBehaviour) {
                $.ui.ddmanager.prepareOffsets(this, event);
            }

            // Execute the drag once - this causes the helper not to be visible before getting its
            // correct position
            this._mouseDrag(event, true);

            // If the ddmanager is used for droppables, inform the manager that dragging has started
            // (see #5003)
            if ($.ui.ddmanager) {
                $.ui.ddmanager.dragStart(this, event);
            }

            return true;
        },

        _refreshOffsets: function (event) {
            this.offset = {
                top: this.positionAbs.top - this.margins.top,
                left: this.positionAbs.left - this.margins.left,
                scroll: false,
                parent: this._getParentOffset(),
                relative: this._getRelativeOffset()
            };

            this.offset.click = {
                left: event.pageX - this.offset.left,
                top: event.pageY - this.offset.top
            };
        },

        _mouseDrag: function (event, noPropagation) {

            // reset any necessary cached properties (see #5009)
            if (this.hasFixedAncestor) {
                this.offset.parent = this._getParentOffset();
            }

            //Compute the helpers position
            this.position = this._generatePosition(event, true);
            this.positionAbs = this._convertPositionTo("absolute");

            //Call plugins and callbacks and use the resulting position if something is returned
            if (!noPropagation) {
                var ui = this._uiHash();
                if (this._trigger("drag", event, ui) === false) {
                    this._mouseUp(new $.Event("mouseup", event));
                    return false;
                }
                this.position = ui.position;
            }

            this.helper[0].style.left = this.position.left + "px";
            this.helper[0].style.top = this.position.top + "px";

            if ($.ui.ddmanager) {
                $.ui.ddmanager.drag(this, event);
            }

            return false;
        },

        _mouseStop: function (event) {

            //If we are using droppables, inform the manager about the drop
            var that = this,
                dropped = false;
            if ($.ui.ddmanager && !this.options.dropBehaviour) {
                dropped = $.ui.ddmanager.drop(this, event);
            }

            //if a drop comes from outside (a sortable)
            if (this.dropped) {
                dropped = this.dropped;
                this.dropped = false;
            }

            if ((this.options.revert === "invalid" && !dropped) ||
                (this.options.revert === "valid" && dropped) ||
                this.options.revert === true || ($.isFunction(this.options.revert) &&
                    this.options.revert.call(this.element, dropped))
            ) {
                $(this.helper).animate(
                    this.originalPosition,
                    parseInt(this.options.revertDuration, 10),
                    function () {
                        if (that._trigger("stop", event) !== false) {
                            that._clear();
                        }
                    }
                );
            } else {
                if (this._trigger("stop", event) !== false) {
                    this._clear();
                }
            }

            return false;
        },

        _mouseUp: function (event) {
            this._unblockFrames();

            // If the ddmanager is used for droppables, inform the manager that dragging has stopped
            // (see #5003)
            if ($.ui.ddmanager) {
                $.ui.ddmanager.dragStop(this, event);
            }

            // Only need to focus if the event occurred on the draggable itself, see #10527
            if (this.handleElement.is(event.target)) {

                // The interaction is over; whether or not the click resulted in a drag,
                // focus the element
                this.element.trigger("focus");
            }

            return $.ui.mouse.prototype._mouseUp.call(this, event);
        },

        cancel: function () {

            if (this.helper.is(".ui-draggable-dragging")) {
                this._mouseUp(new $.Event("mouseup", {target: this.element[0]}));
            } else {
                this._clear();
            }

            return this;

        },

        _getHandle: function (event) {
            return this.options.handle ?
                !!$(event.target).closest(this.element.find(this.options.handle)).length :
                true;
        },

        _setHandleClassName: function () {
            this.handleElement = this.options.handle ?
                this.element.find(this.options.handle) : this.element;
            this._addClass(this.handleElement, "ui-draggable-handle");
        },

        _removeHandleClassName: function () {
            this._removeClass(this.handleElement, "ui-draggable-handle");
        },

        _createHelper: function (event) {

            var o = this.options,
                helperIsFunction = $.isFunction(o.helper),
                helper = helperIsFunction ?
                    $(o.helper.apply(this.element[0], [event])) :
                    (o.helper === "clone" ?
                        this.element.clone().removeAttr("id") :
                        this.element);

            if (!helper.parents("body").length) {
                helper.appendTo((o.appendTo === "parent" ?
                    this.element[0].parentNode :
                    o.appendTo));
            }

            // Http://bugs.jqueryui.com/ticket/9446
            // a helper function can return the original element
            // which wouldn't have been set to relative in _create
            if (helperIsFunction && helper[0] === this.element[0]) {
                this._setPositionRelative();
            }

            if (helper[0] !== this.element[0] &&
                !(/(fixed|absolute)/).test(helper.css("position"))) {
                helper.css("position", "absolute");
            }

            return helper;

        },

        _setPositionRelative: function () {
            if (!(/^(?:r|a|f)/).test(this.element.css("position"))) {
                this.element[0].style.position = "relative";
            }
        },

        _adjustOffsetFromHelper: function (obj) {
            if (typeof obj === "string") {
                obj = obj.split(" ");
            }
            if ($.isArray(obj)) {
                obj = {left: +obj[0], top: +obj[1] || 0};
            }
            if ("left" in obj) {
                this.offset.click.left = obj.left + this.margins.left;
            }
            if ("right" in obj) {
                this.offset.click.left = this.helperProportions.width - obj.right + this.margins.left;
            }
            if ("top" in obj) {
                this.offset.click.top = obj.top + this.margins.top;
            }
            if ("bottom" in obj) {
                this.offset.click.top = this.helperProportions.height - obj.bottom + this.margins.top;
            }
        },

        _isRootNode: function (element) {
            return (/(html|body)/i).test(element.tagName) || element === this.document[0];
        },

        _getParentOffset: function () {

            //Get the offsetParent and cache its position
            var po = this.offsetParent.offset(),
                document = this.document[0];

            // This is a special case where we need to modify a offset calculated on start, since the
            // following happened:
            // 1. The position of the helper is absolute, so it's position is calculated based on the
            // next positioned parent
            // 2. The actual offset parent is a child of the scroll parent, and the scroll parent isn't
            // the document, which means that the scroll is included in the initial calculation of the
            // offset of the parent, and never recalculated upon drag
            if (this.cssPosition === "absolute" && this.scrollParent[0] !== document &&
                $.contains(this.scrollParent[0], this.offsetParent[0])) {
                po.left += this.scrollParent.scrollLeft();
                po.top += this.scrollParent.scrollTop();
            }

            if (this._isRootNode(this.offsetParent[0])) {
                po = {top: 0, left: 0};
            }

            return {
                top: po.top + (parseInt(this.offsetParent.css("borderTopWidth"), 10) || 0),
                left: po.left + (parseInt(this.offsetParent.css("borderLeftWidth"), 10) || 0)
            };

        },

        _getRelativeOffset: function () {
            if (this.cssPosition !== "relative") {
                return {top: 0, left: 0};
            }

            var p = this.element.position(),
                scrollIsRootNode = this._isRootNode(this.scrollParent[0]);

            return {
                top: p.top - (parseInt(this.helper.css("top"), 10) || 0) +
                    (!scrollIsRootNode ? this.scrollParent.scrollTop() : 0),
                left: p.left - (parseInt(this.helper.css("left"), 10) || 0) +
                    (!scrollIsRootNode ? this.scrollParent.scrollLeft() : 0)
            };

        },

        _cacheMargins: function () {
            this.margins = {
                left: (parseInt(this.element.css("marginLeft"), 10) || 0),
                top: (parseInt(this.element.css("marginTop"), 10) || 0),
                right: (parseInt(this.element.css("marginRight"), 10) || 0),
                bottom: (parseInt(this.element.css("marginBottom"), 10) || 0)
            };
        },

        _cacheHelperProportions: function () {
            this.helperProportions = {
                width: this.helper.outerWidth(),
                height: this.helper.outerHeight()
            };
        },

        _setContainment: function () {

            var isUserScrollable, c, ce,
                o = this.options,
                document = this.document[0];

            this.relativeContainer = null;

            if (!o.containment) {
                this.containment = null;
                return;
            }

            if (o.containment === "window") {
                this.containment = [
                    $(window).scrollLeft() - this.offset.relative.left - this.offset.parent.left,
                    $(window).scrollTop() - this.offset.relative.top - this.offset.parent.top,
                    $(window).scrollLeft() + $(window).width() -
                    this.helperProportions.width - this.margins.left,
                    $(window).scrollTop() +
                    ($(window).height() || document.body.parentNode.scrollHeight) -
                    this.helperProportions.height - this.margins.top
                ];
                return;
            }

            if (o.containment === "document") {
                this.containment = [
                    0,
                    0,
                    $(document).width() - this.helperProportions.width - this.margins.left,
                    ($(document).height() || document.body.parentNode.scrollHeight) -
                    this.helperProportions.height - this.margins.top
                ];
                return;
            }

            if (o.containment.constructor === Array) {
                this.containment = o.containment;
                return;
            }

            if (o.containment === "parent") {
                o.containment = this.helper[0].parentNode;
            }

            c = $(o.containment);
            ce = c[0];

            if (!ce) {
                return;
            }

            isUserScrollable = /(scroll|auto)/.test(c.css("overflow"));

            this.containment = [
                (parseInt(c.css("borderLeftWidth"), 10) || 0) +
                (parseInt(c.css("paddingLeft"), 10) || 0),
                (parseInt(c.css("borderTopWidth"), 10) || 0) +
                (parseInt(c.css("paddingTop"), 10) || 0),
                (isUserScrollable ? Math.max(ce.scrollWidth, ce.offsetWidth) : ce.offsetWidth) -
                (parseInt(c.css("borderRightWidth"), 10) || 0) -
                (parseInt(c.css("paddingRight"), 10) || 0) -
                this.helperProportions.width -
                this.margins.left -
                this.margins.right,
                (isUserScrollable ? Math.max(ce.scrollHeight, ce.offsetHeight) : ce.offsetHeight) -
                (parseInt(c.css("borderBottomWidth"), 10) || 0) -
                (parseInt(c.css("paddingBottom"), 10) || 0) -
                this.helperProportions.height -
                this.margins.top -
                this.margins.bottom
            ];
            this.relativeContainer = c;
        },

        _convertPositionTo: function (d, pos) {

            if (!pos) {
                pos = this.position;
            }

            var mod = d === "absolute" ? 1 : -1,
                scrollIsRootNode = this._isRootNode(this.scrollParent[0]);

            return {
                top: (

                    // The absolute mouse position
                    pos.top +

                    // Only for relative positioned nodes: Relative offset from element to offset parent
                    this.offset.relative.top * mod +

                    // The offsetParent's offset without borders (offset + border)
                    this.offset.parent.top * mod -
                    ((this.cssPosition === "fixed" ?
                        -this.offset.scroll.top :
                        (scrollIsRootNode ? 0 : this.offset.scroll.top)) * mod)
                ),
                left: (

                    // The absolute mouse position
                    pos.left +

                    // Only for relative positioned nodes: Relative offset from element to offset parent
                    this.offset.relative.left * mod +

                    // The offsetParent's offset without borders (offset + border)
                    this.offset.parent.left * mod -
                    ((this.cssPosition === "fixed" ?
                        -this.offset.scroll.left :
                        (scrollIsRootNode ? 0 : this.offset.scroll.left)) * mod)
                )
            };

        },

        _generatePosition: function (event, constrainPosition) {

            var containment, co, top, left,
                o = this.options,
                scrollIsRootNode = this._isRootNode(this.scrollParent[0]),
                pageX = event.pageX,
                pageY = event.pageY;

            // Cache the scroll
            if (!scrollIsRootNode || !this.offset.scroll) {
                this.offset.scroll = {
                    top: this.scrollParent.scrollTop(),
                    left: this.scrollParent.scrollLeft()
                };
            }

            /*
		 * - Position constraining -
		 * Constrain the position to a mix of grid, containment.
		 */

            // If we are not dragging yet, we won't check for options
            if (constrainPosition) {
                if (this.containment) {
                    if (this.relativeContainer) {
                        co = this.relativeContainer.offset();
                        containment = [
                            this.containment[0] + co.left,
                            this.containment[1] + co.top,
                            this.containment[2] + co.left,
                            this.containment[3] + co.top
                        ];
                    } else {
                        containment = this.containment;
                    }

                    if (event.pageX - this.offset.click.left < containment[0]) {
                        pageX = containment[0] + this.offset.click.left;
                    }
                    if (event.pageY - this.offset.click.top < containment[1]) {
                        pageY = containment[1] + this.offset.click.top;
                    }
                    if (event.pageX - this.offset.click.left > containment[2]) {
                        pageX = containment[2] + this.offset.click.left;
                    }
                    if (event.pageY - this.offset.click.top > containment[3]) {
                        pageY = containment[3] + this.offset.click.top;
                    }
                }

                if (o.grid) {

                    //Check for grid elements set to 0 to prevent divide by 0 error causing invalid
                    // argument errors in IE (see ticket #6950)
                    top = o.grid[1] ? this.originalPageY + Math.round((pageY -
                        this.originalPageY) / o.grid[1]) * o.grid[1] : this.originalPageY;
                    pageY = containment ? ((top - this.offset.click.top >= containment[1] ||
                        top - this.offset.click.top > containment[3]) ?
                        top :
                        ((top - this.offset.click.top >= containment[1]) ?
                            top - o.grid[1] : top + o.grid[1])) : top;

                    left = o.grid[0] ? this.originalPageX +
                        Math.round((pageX - this.originalPageX) / o.grid[0]) * o.grid[0] :
                        this.originalPageX;
                    pageX = containment ? ((left - this.offset.click.left >= containment[0] ||
                        left - this.offset.click.left > containment[2]) ?
                        left :
                        ((left - this.offset.click.left >= containment[0]) ?
                            left - o.grid[0] : left + o.grid[0])) : left;
                }

                if (o.axis === "y") {
                    pageX = this.originalPageX;
                }

                if (o.axis === "x") {
                    pageY = this.originalPageY;
                }
            }

            return {
                top: (

                    // The absolute mouse position
                    pageY -

                    // Click offset (relative to the element)
                    this.offset.click.top -

                    // Only for relative positioned nodes: Relative offset from element to offset parent
                    this.offset.relative.top -

                    // The offsetParent's offset without borders (offset + border)
                    this.offset.parent.top +
                    (this.cssPosition === "fixed" ?
                        -this.offset.scroll.top :
                        (scrollIsRootNode ? 0 : this.offset.scroll.top))
                ),
                left: (

                    // The absolute mouse position
                    pageX -

                    // Click offset (relative to the element)
                    this.offset.click.left -

                    // Only for relative positioned nodes: Relative offset from element to offset parent
                    this.offset.relative.left -

                    // The offsetParent's offset without borders (offset + border)
                    this.offset.parent.left +
                    (this.cssPosition === "fixed" ?
                        -this.offset.scroll.left :
                        (scrollIsRootNode ? 0 : this.offset.scroll.left))
                )
            };

        },

        _clear: function () {
            this._removeClass(this.helper, "ui-draggable-dragging");
            if (this.helper[0] !== this.element[0] && !this.cancelHelperRemoval) {
                this.helper.remove();
            }
            this.helper = null;
            this.cancelHelperRemoval = false;
            if (this.destroyOnClear) {
                this.destroy();
            }
        },

        // From now on bulk stuff - mainly helpers

        _trigger: function (type, event, ui) {
            ui = ui || this._uiHash();
            $.ui.plugin.call(this, type, [event, ui, this], true);

            // Absolute position and offset (see #6884 ) have to be recalculated after plugins
            if (/^(drag|start|stop)/.test(type)) {
                this.positionAbs = this._convertPositionTo("absolute");
                ui.offset = this.positionAbs;
            }
            return $.Widget.prototype._trigger.call(this, type, event, ui);
        },

        plugins: {},

        _uiHash: function () {
            return {
                helper: this.helper,
                position: this.position,
                originalPosition: this.originalPosition,
                offset: this.positionAbs
            };
        }

    });

    $.ui.plugin.add("draggable", "connectToSortable", {
        start: function (event, ui, draggable) {
            var uiSortable = $.extend({}, ui, {
                item: draggable.element
            });

            draggable.sortables = [];
            $(draggable.options.connectToSortable).each(function () {
                var sortable = $(this).sortable("instance");

                if (sortable && !sortable.options.disabled) {
                    draggable.sortables.push(sortable);

                    // RefreshPositions is called at drag start to refresh the containerCache
                    // which is used in drag. This ensures it's initialized and synchronized
                    // with any changes that might have happened on the page since initialization.
                    sortable.refreshPositions();
                    sortable._trigger("activate", event, uiSortable);
                }
            });
        },
        stop: function (event, ui, draggable) {
            var uiSortable = $.extend({}, ui, {
                item: draggable.element
            });

            draggable.cancelHelperRemoval = false;

            $.each(draggable.sortables, function () {
                var sortable = this;

                if (sortable.isOver) {
                    sortable.isOver = 0;

                    // Allow this sortable to handle removing the helper
                    draggable.cancelHelperRemoval = true;
                    sortable.cancelHelperRemoval = false;

                    // Use _storedCSS To restore properties in the sortable,
                    // as this also handles revert (#9675) since the draggable
                    // may have modified them in unexpected ways (#8809)
                    sortable._storedCSS = {
                        position: sortable.placeholder.css("position"),
                        top: sortable.placeholder.css("top"),
                        left: sortable.placeholder.css("left")
                    };

                    sortable._mouseStop(event);

                    // Once drag has ended, the sortable should return to using
                    // its original helper, not the shared helper from draggable
                    sortable.options.helper = sortable.options._helper;
                } else {

                    // Prevent this Sortable from removing the helper.
                    // However, don't set the draggable to remove the helper
                    // either as another connected Sortable may yet handle the removal.
                    sortable.cancelHelperRemoval = true;

                    sortable._trigger("deactivate", event, uiSortable);
                }
            });
        },
        drag: function (event, ui, draggable) {
            $.each(draggable.sortables, function () {
                var innermostIntersecting = false,
                    sortable = this;

                // Copy over variables that sortable's _intersectsWith uses
                sortable.positionAbs = draggable.positionAbs;
                sortable.helperProportions = draggable.helperProportions;
                sortable.offset.click = draggable.offset.click;

                if (sortable._intersectsWith(sortable.containerCache)) {
                    innermostIntersecting = true;

                    $.each(draggable.sortables, function () {

                        // Copy over variables that sortable's _intersectsWith uses
                        this.positionAbs = draggable.positionAbs;
                        this.helperProportions = draggable.helperProportions;
                        this.offset.click = draggable.offset.click;

                        if (this !== sortable &&
                            this._intersectsWith(this.containerCache) &&
                            $.contains(sortable.element[0], this.element[0])) {
                            innermostIntersecting = false;
                        }

                        return innermostIntersecting;
                    });
                }

                if (innermostIntersecting) {

                    // If it intersects, we use a little isOver variable and set it once,
                    // so that the move-in stuff gets fired only once.
                    if (!sortable.isOver) {
                        sortable.isOver = 1;

                        // Store draggable's parent in case we need to reappend to it later.
                        draggable._parent = ui.helper.parent();

                        sortable.currentItem = ui.helper
                            .appendTo(sortable.element)
                            .data("ui-sortable-item", true);

                        // Store helper option to later restore it
                        sortable.options._helper = sortable.options.helper;

                        sortable.options.helper = function () {
                            return ui.helper[0];
                        };

                        // Fire the start events of the sortable with our passed browser event,
                        // and our own helper (so it doesn't create a new one)
                        event.target = sortable.currentItem[0];
                        sortable._mouseCapture(event, true);
                        sortable._mouseStart(event, true, true);

                        // Because the browser event is way off the new appended portlet,
                        // modify necessary variables to reflect the changes
                        sortable.offset.click.top = draggable.offset.click.top;
                        sortable.offset.click.left = draggable.offset.click.left;
                        sortable.offset.parent.left -= draggable.offset.parent.left -
                            sortable.offset.parent.left;
                        sortable.offset.parent.top -= draggable.offset.parent.top -
                            sortable.offset.parent.top;

                        draggable._trigger("toSortable", event);

                        // Inform draggable that the helper is in a valid drop zone,
                        // used solely in the revert option to handle "valid/invalid".
                        draggable.dropped = sortable.element;

                        // Need to refreshPositions of all sortables in the case that
                        // adding to one sortable changes the location of the other sortables (#9675)
                        $.each(draggable.sortables, function () {
                            this.refreshPositions();
                        });

                        // Hack so receive/update callbacks work (mostly)
                        draggable.currentItem = draggable.element;
                        sortable.fromOutside = draggable;
                    }

                    if (sortable.currentItem) {
                        sortable._mouseDrag(event);

                        // Copy the sortable's position because the draggable's can potentially reflect
                        // a relative position, while sortable is always absolute, which the dragged
                        // element has now become. (#8809)
                        ui.position = sortable.position;
                    }
                } else {

                    // If it doesn't intersect with the sortable, and it intersected before,
                    // we fake the drag stop of the sortable, but make sure it doesn't remove
                    // the helper by using cancelHelperRemoval.
                    if (sortable.isOver) {

                        sortable.isOver = 0;
                        sortable.cancelHelperRemoval = true;

                        // Calling sortable's mouseStop would trigger a revert,
                        // so revert must be temporarily false until after mouseStop is called.
                        sortable.options._revert = sortable.options.revert;
                        sortable.options.revert = false;

                        sortable._trigger("out", event, sortable._uiHash(sortable));
                        sortable._mouseStop(event, true);

                        // Restore sortable behaviors that were modfied
                        // when the draggable entered the sortable area (#9481)
                        sortable.options.revert = sortable.options._revert;
                        sortable.options.helper = sortable.options._helper;

                        if (sortable.placeholder) {
                            sortable.placeholder.remove();
                        }

                        // Restore and recalculate the draggable's offset considering the sortable
                        // may have modified them in unexpected ways. (#8809, #10669)
                        ui.helper.appendTo(draggable._parent);
                        draggable._refreshOffsets(event);
                        ui.position = draggable._generatePosition(event, true);

                        draggable._trigger("fromSortable", event);

                        // Inform draggable that the helper is no longer in a valid drop zone
                        draggable.dropped = false;

                        // Need to refreshPositions of all sortables just in case removing
                        // from one sortable changes the location of other sortables (#9675)
                        $.each(draggable.sortables, function () {
                            this.refreshPositions();
                        });
                    }
                }
            });
        }
    });

    $.ui.plugin.add("draggable", "cursor", {
        start: function (event, ui, instance) {
            var t = $("body"),
                o = instance.options;

            if (t.css("cursor")) {
                o._cursor = t.css("cursor");
            }
            t.css("cursor", o.cursor);
        },
        stop: function (event, ui, instance) {
            var o = instance.options;
            if (o._cursor) {
                $("body").css("cursor", o._cursor);
            }
        }
    });

    $.ui.plugin.add("draggable", "opacity", {
        start: function (event, ui, instance) {
            var t = $(ui.helper),
                o = instance.options;
            if (t.css("opacity")) {
                o._opacity = t.css("opacity");
            }
            t.css("opacity", o.opacity);
        },
        stop: function (event, ui, instance) {
            var o = instance.options;
            if (o._opacity) {
                $(ui.helper).css("opacity", o._opacity);
            }
        }
    });

    $.ui.plugin.add("draggable", "scroll", {
        start: function (event, ui, i) {
            if (!i.scrollParentNotHidden) {
                i.scrollParentNotHidden = i.helper.scrollParent(false);
            }

            if (i.scrollParentNotHidden[0] !== i.document[0] &&
                i.scrollParentNotHidden[0].tagName !== "HTML") {
                i.overflowOffset = i.scrollParentNotHidden.offset();
            }
        },
        drag: function (event, ui, i) {

            var o = i.options,
                scrolled = false,
                scrollParent = i.scrollParentNotHidden[0],
                document = i.document[0];

            if (scrollParent !== document && scrollParent.tagName !== "HTML") {
                if (!o.axis || o.axis !== "x") {
                    if ((i.overflowOffset.top + scrollParent.offsetHeight) - event.pageY <
                        o.scrollSensitivity) {
                        scrollParent.scrollTop = scrolled = scrollParent.scrollTop + o.scrollSpeed;
                    } else if (event.pageY - i.overflowOffset.top < o.scrollSensitivity) {
                        scrollParent.scrollTop = scrolled = scrollParent.scrollTop - o.scrollSpeed;
                    }
                }

                if (!o.axis || o.axis !== "y") {
                    if ((i.overflowOffset.left + scrollParent.offsetWidth) - event.pageX <
                        o.scrollSensitivity) {
                        scrollParent.scrollLeft = scrolled = scrollParent.scrollLeft + o.scrollSpeed;
                    } else if (event.pageX - i.overflowOffset.left < o.scrollSensitivity) {
                        scrollParent.scrollLeft = scrolled = scrollParent.scrollLeft - o.scrollSpeed;
                    }
                }

            } else {

                if (!o.axis || o.axis !== "x") {
                    if (event.pageY - $(document).scrollTop() < o.scrollSensitivity) {
                        scrolled = $(document).scrollTop($(document).scrollTop() - o.scrollSpeed);
                    } else if ($(window).height() - (event.pageY - $(document).scrollTop()) <
                        o.scrollSensitivity) {
                        scrolled = $(document).scrollTop($(document).scrollTop() + o.scrollSpeed);
                    }
                }

                if (!o.axis || o.axis !== "y") {
                    if (event.pageX - $(document).scrollLeft() < o.scrollSensitivity) {
                        scrolled = $(document).scrollLeft(
                            $(document).scrollLeft() - o.scrollSpeed
                        );
                    } else if ($(window).width() - (event.pageX - $(document).scrollLeft()) <
                        o.scrollSensitivity) {
                        scrolled = $(document).scrollLeft(
                            $(document).scrollLeft() + o.scrollSpeed
                        );
                    }
                }

            }

            if (scrolled !== false && $.ui.ddmanager && !o.dropBehaviour) {
                $.ui.ddmanager.prepareOffsets(i, event);
            }

        }
    });

    $.ui.plugin.add("draggable", "snap", {
        start: function (event, ui, i) {

            var o = i.options;

            i.snapElements = [];

            $(o.snap.constructor !== String ? (o.snap.items || ":data(ui-draggable)") : o.snap)
                .each(function () {
                    var $t = $(this),
                        $o = $t.offset();
                    if (this !== i.element[0]) {
                        i.snapElements.push({
                            item: this,
                            width: $t.outerWidth(), height: $t.outerHeight(),
                            top: $o.top, left: $o.left
                        });
                    }
                });

        },
        drag: function (event, ui, inst) {

            var ts, bs, ls, rs, l, r, t, b, i, first,
                o = inst.options,
                d = o.snapTolerance,
                x1 = ui.offset.left, x2 = x1 + inst.helperProportions.width,
                y1 = ui.offset.top, y2 = y1 + inst.helperProportions.height;

            for (i = inst.snapElements.length - 1; i >= 0; i--) {

                l = inst.snapElements[i].left - inst.margins.left;
                r = l + inst.snapElements[i].width;
                t = inst.snapElements[i].top - inst.margins.top;
                b = t + inst.snapElements[i].height;

                if (x2 < l - d || x1 > r + d || y2 < t - d || y1 > b + d ||
                    !$.contains(inst.snapElements[i].item.ownerDocument,
                        inst.snapElements[i].item)) {
                    if (inst.snapElements[i].snapping) {
                        (inst.options.snap.release &&
                            inst.options.snap.release.call(
                                inst.element,
                                event,
                                $.extend(inst._uiHash(), {snapItem: inst.snapElements[i].item})
                            ));
                    }
                    inst.snapElements[i].snapping = false;
                    continue;
                }

                if (o.snapMode !== "inner") {
                    ts = Math.abs(t - y2) <= d;
                    bs = Math.abs(b - y1) <= d;
                    ls = Math.abs(l - x2) <= d;
                    rs = Math.abs(r - x1) <= d;
                    if (ts) {
                        ui.position.top = inst._convertPositionTo("relative", {
                            top: t - inst.helperProportions.height,
                            left: 0
                        }).top;
                    }
                    if (bs) {
                        ui.position.top = inst._convertPositionTo("relative", {
                            top: b,
                            left: 0
                        }).top;
                    }
                    if (ls) {
                        ui.position.left = inst._convertPositionTo("relative", {
                            top: 0,
                            left: l - inst.helperProportions.width
                        }).left;
                    }
                    if (rs) {
                        ui.position.left = inst._convertPositionTo("relative", {
                            top: 0,
                            left: r
                        }).left;
                    }
                }

                first = (ts || bs || ls || rs);

                if (o.snapMode !== "outer") {
                    ts = Math.abs(t - y1) <= d;
                    bs = Math.abs(b - y2) <= d;
                    ls = Math.abs(l - x1) <= d;
                    rs = Math.abs(r - x2) <= d;
                    if (ts) {
                        ui.position.top = inst._convertPositionTo("relative", {
                            top: t,
                            left: 0
                        }).top;
                    }
                    if (bs) {
                        ui.position.top = inst._convertPositionTo("relative", {
                            top: b - inst.helperProportions.height,
                            left: 0
                        }).top;
                    }
                    if (ls) {
                        ui.position.left = inst._convertPositionTo("relative", {
                            top: 0,
                            left: l
                        }).left;
                    }
                    if (rs) {
                        ui.position.left = inst._convertPositionTo("relative", {
                            top: 0,
                            left: r - inst.helperProportions.width
                        }).left;
                    }
                }

                if (!inst.snapElements[i].snapping && (ts || bs || ls || rs || first)) {
                    (inst.options.snap.snap &&
                        inst.options.snap.snap.call(
                            inst.element,
                            event,
                            $.extend(inst._uiHash(), {
                                snapItem: inst.snapElements[i].item
                            })));
                }
                inst.snapElements[i].snapping = (ts || bs || ls || rs || first);

            }

        }
    });

    $.ui.plugin.add("draggable", "stack", {
        start: function (event, ui, instance) {
            var min,
                o = instance.options,
                group = $.makeArray($(o.stack)).sort(function (a, b) {
                    return (parseInt($(a).css("zIndex"), 10) || 0) -
                        (parseInt($(b).css("zIndex"), 10) || 0);
                });

            if (!group.length) {
                return;
            }

            min = parseInt($(group[0]).css("zIndex"), 10) || 0;
            $(group).each(function (i) {
                $(this).css("zIndex", min + i);
            });
            this.css("zIndex", (min + group.length));
        }
    });

    $.ui.plugin.add("draggable", "zIndex", {
        start: function (event, ui, instance) {
            var t = $(ui.helper),
                o = instance.options;

            if (t.css("zIndex")) {
                o._zIndex = t.css("zIndex");
            }
            t.css("zIndex", o.zIndex);
        },
        stop: function (event, ui, instance) {
            var o = instance.options;

            if (o._zIndex) {
                $(ui.helper).css("zIndex", o._zIndex);
            }
        }
    });

    var widgetsDraggable = $.ui.draggable;


}));